v4l2uvc.h

00001 /*******************************************************************************
00002 #                 luvcview: Sdl video Usb Video Class grabber          .         #
00003 #This package work with the Logitech UVC based webcams with the mjpeg feature. #
00004 #All the decoding is in user space with the embedded jpeg decoder              #
00005 #.                                                                             #
00006 #                 Copyright (C) 2005 2006 Laurent Pinchart &&  Michel Xhaard     #
00007 #                                                                              #
00008 # This program is free software; you can redistribute it and/or modify         #
00009 # it under the terms of the GNU General Public License as published by         #
00010 # the Free Software Foundation; either version 2 of the License, or            #
00011 # (at your option) any later version.                                          #
00012 #                                                                              #
00013 # This program is distributed in the hope that it will be useful,              #
00014 # but WITHOUT ANY WARRANTY; without even the implied warranty of               #
00015 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                #
00016 # GNU General Public License for more details.                                 #
00017 #                                                                              #
00018 # You should have received a copy of the GNU General Public License            #
00019 # along with this program; if not, write to the Free Software                  #
00020 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA    #
00021 #                                                                              #
00022 *******************************************************************************/
00023 
00024 #ifndef V4L2UVC_H
00025 #define V4L2UVC_H
00026 
00027 #include <stdio.h>
00028 #include <string.h>
00029 #include <fcntl.h>
00030 #include <unistd.h>
00031 #include <errno.h>
00032 #include <sys/ioctl.h>
00033 #include <sys/mman.h>
00034 #include <sys/select.h>
00035 #include <linux/videodev.h>
00036 #include "avilib.h"
00037 
00038 #include "uvcvideo.h"
00039 #include "dynctrl-logitech.h"
00040 
00041 
00042 #define NB_BUFFER 2
00043 #define DHT_SIZE 432
00044 
00045 
00046 
00047 struct vdIn {
00048     int fd;
00049     char *videodevice;
00050     char *status;
00051     char *pictName;
00052     struct v4l2_capability cap;
00053     struct v4l2_format fmt;
00054     struct v4l2_buffer buf;
00055     struct v4l2_requestbuffers rb;
00056     void *mem[NB_BUFFER];
00057     unsigned char *tmpbuffer;
00058     unsigned char *framebuffer;
00059     int isstreaming;
00060     int grabmethod;
00061     int width;
00062     int height;
00063     int fps;
00064     int formatIn;
00065     int formatOut;
00066     int framesizeIn;
00067     int signalquit;
00068     int toggleAvi;
00069     int getPict;
00070     int rawFrameCapture;
00071     /* raw frame capture */
00072     unsigned int fileCounter;
00073     /* raw frame stream capture */
00074     unsigned int rfsFramesWritten;
00075     unsigned int rfsBytesWritten;
00076     /* raw stream capture */
00077     FILE *captureFile;
00078     unsigned int framesWritten;
00079     unsigned int bytesWritten;
00080     avi_t *avifile;
00081     char *avifilename;
00082     int framecount;
00083     int recordstart;
00084     int recordtime;
00085 };
00086 int
00087 init_videoIn(struct vdIn *vd, char *device, int width, int height, int fps,
00088              int format, int grabmethod, char *avifilename);
00089 int enum_controls(int vd);
00090 int save_controls(int vd);
00091 int load_controls(int vd);
00092 
00093 int uvcGrab(struct vdIn *vd);
00094 int close_v4l2(struct vdIn *vd);
00095 
00096 int v4l2GetControl(struct vdIn *vd, int control);
00097 int v4l2SetControl(struct vdIn *vd, int control, int value);
00098 int v4l2UpControl(struct vdIn *vd, int control);
00099 int v4l2DownControl(struct vdIn *vd, int control);
00100 int v4l2ToggleControl(struct vdIn *vd, int control);
00101 int v4l2ResetControl(struct vdIn *vd, int control);
00102 int v4l2ResetPanTilt(struct vdIn *vd);
00103 int v4L2UpDownPan(struct vdIn *vd, short inc);
00104 int v4L2UpDownTilt(struct vdIn *vd,short inc);
00105 int v4L2UpDownPanTilt(struct vdIn *vd, short inc_p, short inc_t);
00106 int v4l2SetLightFrequencyFilter(struct vdIn *vd,int flt);
00107 int enum_frame_intervals(int dev, __u32 pixfmt, __u32 width, __u32 height);
00108 int enum_frame_sizes(int dev, __u32 pixfmt);
00109 int enum_frame_formats(int dev, unsigned int *supported_formats, unsigned int max_formats);
00110 
00111 #endif